Irrigator for medical, chemical, and other purposes.



U. FRIEDEMANN & T. E. THOMPSON.

IRRIGATOR FOR MEDICAL, CHEMICAL, AND OTHER PURPOSES.

APPLICATION FILED JULY 29. I916.

1,289,723., Patented Dec. 31, 1918.

ULRICH FRIEDEMANN', OF HACKNEY, LONDON, AND THOMAS E. THOMPSON,OF'LONDON,

ENGLAND.

IRRIGATOR non MEnio'A-L, CHEMICAL, AND OTHER PURPOSES.

Application filed July 29,

To all whom it may concern:

Be it known that we, ULRICH FRIEDEMANN and THOMAS EDMUND THOMPSON,residing at 57 l avarino road, Hackney, London, N. 111., England, and121 Rosebery avenue, London, E. 0., England, respectively, have inventedcertain new and useful Improvements in or Relating to Irrigators forMedi' purposes of the type in which the liquid is drawn up from acontainer or receptacle by means of an apparatus which when immersed inthe liquid allows the latter to compress air contained in the apparatusand by a siphon like action to start the'flow of the liquid through theapparatus, which flow continues so long as the apparatus is in theliquid and until the container is emptied.

Apparatus of this kind has heretofore been constructed as a singleelement of glass or the like, the parts being sealed or perma' nentlyconnected together and consisting of a central tube open at the bottomand the top with a bulb or casing'surrounding it and sealed to it ateach end. From the top of the bulb or casing and forming a continuationof the'central tube is an extension to which a rubber or like tubeconnected to a nozzle or the like is attached. A small baglikereceptacle or pocket is formed on the side of the extension for thepurpose of containing when desired a pellet or tablet of medicament. Ahole is formed at the bottom of the bulb or casing and another hole isformed in the inner central tube near its upper end inside the bulb Inthe apparatus as above described considerable difliculties have beenexperienced in p cleansing the interior owing toits construction in anon-separable single piece," and it is the object of the presentinvention to construct an'improved apparatus of the kind referred towhich may be easily taken to pieces for the purpose of cleansing andreadily assembled again in an airtight manner.

The invention will now be described in Specification of Letters Patent.

l atent'ed Dec.

1916. Serial No. 112,188.

connection with the accompanying drawings in which Figure 1. is asectional elevation of the improved device, and

Fig. 2. is a similar view of a' modified form.

The bulb or casing may be made of aluminium, glass or other suitablematerial and in the form shown in Fig. 1 the bulb is formed with top andbottom pieces a and b internally threaded at 0 and d to engage threadedportions on a central tube e of metal, glass or the like. The centraltube (2 extends through the top piece a and is formed with anenlargement f for securing it to a rubber or like tube. It is alsoprovided with a screwed opening'g' at its side between its upper end'andthe top piece a for detachably securing a bag-like 'recep of a cylinder71 preferably of glass, forming the body of the bulb, a rubber or likewasher or packing j being inserted in each recess for the ends of thecylinder 2' to bear against to form an airtight joint.

In assembling the parts, the top piece a. is first placed on the centraltube c and screwed on to the upper enlarged screwed portion thereon. arubber or other suitable joint being used if desired. The glass cylinderi is then passed over the central tube 6, and its upper end inserted inthe recess h in the top piece a against the packingj therein. The bottompiece bis next screwed on to the lower screwed portion of the centraltube 6 which is of slightly smaller diameter than the upper screwedportion to allow thetop piece a to pass over it, and is provided withsuitable packing if required. The lower end of the glass cylinder 2' isinserted in the recess h in the bottom piece I) and when the latter isscrewed up all the arts are secured in an airtight manner.

The bottom 'piece b is perforated at 7:: and the central tubec isprovided with a hole Z in the usual manner.

In the modified form shown in Fig. 2 the top piece'is formed in one withthe central tube 6 and with the cylinder 2, the bottom piece I) beingsecured to the latter in the manner above described. In this case theentire apparatus with the exception of the employed or the parts may besecured to gether by means of screwed metal or other unions engagingbeads or fiangesiformed on the pieces, a packing ring being insertedbetween the beads.

" It is to be noted that in the construction shown in Fig. 2 the jointbetween the bottom piece]; and the upper part of the device may besituated at any convenient pointin the length thereof, for instance itmay coincide with theposition of the joint between the cylindricalmember 5 and the top piece a in Fig.1. v Q Q 7 When the central tube 6or the bulb is made of opa que material a glass or other 7 transparenttube'may be inserted in the rubher tube leading-to the nozzle or thelike in order that the flow of liquid through the apparatus may beobserved.

V In operation the apnaratus'is immersed in the liquid so that thelatter isabove the enlargement F, while the liquid contalner is placedin a position higher than that at which the nozzle has to be used.Liquid rises in the central tube 6 to a level equalto that inthereceptacle and alsgenters the bulb or casing through the perforationis in the bottom piece I). Liquid entering the latter compresses the airin the bulb, or'easing and owing to the head of liquid ex sting 1n thecontainer the air is eventually forc'ed out through the holel causingthe liquid above it to pass farther toward the nozzle while fresh liquidrises totake its place.

. By this means siphonic action may be. 'started'and the whole of theliquid be eventually'withdr'awn from the container, up the central tube'6 past the medicament which it absorbs, and throughthe tube to be dis-1 charged through anysuitable form of nozzle.

-Wl1en' the apparatus is to' be used for chemical purposes, for-examplein emptying bottles or other receptacles containing acid or otherliquidgiving ofi deleteriousfumes,

. the "small bag-like receptacle abovereferred to need not if desired beprovided.

It will be understood that the parts materialaccording to the purposefor which the irrigator is required and that the invena tion is notlimited to the constructions above described, the essential feature ofthe in- Gopies of this patent maybe obtained for five cents each, byaddressing the fGommissioner of Patents; 3

of the apparatus may beimade fro'm any. suitable vention being that theparts are made separable for cleansing purposes as distinguishedfromknown types of apparatus of this type y 2. An irrigator comprising astarter for a siphon, consisting of a cylinder, a central tube, top andbottom cups adapted to em- .brac'e said tube'and'being capable ofretalning between them said cylinder, said tube being provided with arecess formed above theupper .of said cups for the reception of amedicated pellet.

3. An irrigator, comprising 'a'sta'rter for a siphon, consisting of acylinder whose edges are formed with shoulders, a central tube formedwith screw threads at'its upper and lower ends, top and bottom cups eachprovided with an internally screw threaded opening adapted to embracethe first'named screw threads, the outer edges of the cup members beingformed with a" shoulder adapted to engage the shoulders formed on theedges of the cylinder, whereby to retain I edges 'of the cups thecylinder between them and suitable pack- 'siphon including a tube, acylinder adapted .toenvelop suchtube andbeingconnected at e projectsthroughsuch opening, the upper its upper endthereto, a-Jcup-shapedmember provided with an opening through its bottom adapted. to bepositioned so that the tube 10o edgeof said cup engaging the; lowermostedgeof the cylinder so that an airtightjoint is formed, the cup-shaped-member being provided with a second small opening near its base, thetube being providedwith an" opening formed below the point of'engaga.

the'upper end of-the former. i

.. In testimony whereof we afiix oursigna- Washington, D. G.

.ment of the cylinder with the-tube adjacent*

